Float for concrete.



G. C. WALKER.

FLOAT FOR CONCRETE.

APPLICATION FILED SEPT. a, 1916.

1,234,984. Patented July 31, 1917.

E n w "1 0% GEORGE o. WALKER, or WAYNE, MICHIGAN.

FLOAT FOR CONCRETE.

Specification of Letters Patent.

Patented July 31, 1917.

Application filed September 8, 1916. Serial N 0. 119,001.

To all whom it may concern Be it known that I, GEORGE C. W'ALKER, acitizen of the United States of America, residing at Wayne, in thecounty of Wayne and State of Michigan, have invented certain new anduseful Improvements in Floats for Concrete, of which the following is aspecification, reference being had therein to the accompanying drawings.

This invention relates to a floating de vice for concrete, and moreparticularly to a road or pavement surfacing device that can beadvantageously used in the construction of concrete roads and pavements.

The object of my invention is to provide a simple, durable andinexpensive device of the above type that may be easily manipu latedto'float, shift, and work sand, gravel and cementitious material in thesurfaceof a road or pavement.

The device is adapted to be reciprocated transversely of a road orpavement bed and gradually advanced over the surface thereof to leveland smooth the surface between the temporary retaining side boards ormold walls.

The detail construction of the device and the advantages derived by itsuse will here inafter appear, and reference will now be had to thedrawing, wherein Figure l is a plan of the device as used on a road;

Fig. 2 is a cross sectional view of a road illustrating the manner ofusing the device;

Fig. 3 is a perspective view of the device, and

Fig. 4 is a cross sectional view of the same.

The device comprises a strap 1 that may be made of a piece of flexibleand pliable belti. g or other strong and durable material. Attached tothe ends of the strap 1 are handle bars 2,1said handle bars being roadbed it is the usual practice to provide A side retaining boards or moldmembers 7 between which concrete is placed to form a road body andsurface.

leveled off with the usual implements, my device is employed forsurfacing and further leveling the concrete and is manipulated by two ormore workmen. By allowing the device to lie flat upon the road andshifting it back and forth, somewhat in a zig zag manner, and at thesame time gradually advancing the device, the surface of the concrete isworked over to that extent as to remove irregularities and protubertheforward edge of the belt until a place is reached, where by the actionof the reciprocatingbelt it will become embedded.

In actually using the device in road building, I have found that theweight of the strap is sufficient to force the coarse materials downwardcausing finer cementitious materials and moisture to rise and it isthese finer materials that are worked over by the strap until a smoothand uninterrupted surface is formed upon the road body.

What I claim is 1. As a new article of manufacture, a road surfacingstrap having provision atthe ends thereof so that said strap may bemanipulated upon the surface of the road,

2. A road surfacing device comprising a flat pliable strap, and handlebars at the ends thereof.

In testimony whereof I aflix my signature in presence of two witnesses.

GEORGE C. IVALKER.

Before the concrete becomes indurate and after it has been 5

